Motor attachment for sewing machines



Feb.mz9,\19z3. 1,445,947

' F. F. HILLIX 4 MOTOR ATTACHMENT FOR SEWING MACHINES Filed oct. 29,1921 Patented Feb. 2Q, 1923.

FOSTER E. HILLIX, E oLEvEtain),` oli-rio, .asistencia-"ro writtensniviitciiiacnrnn. l COMPANY, oEoLEvELnNn, onto, aoonronarron or onto.v

'lfOTOjR ATTACHMENT FOR SEWENG MACHINES.

'c Application filed Ctobci 29, 1921. Serial No` 511,356.

To all whom t may concer/n.'

Be it known that 1, FosfrEn'F. HinLix,.a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and vState of Ohio,have invented a certain new sewing machine, and which can be readilyapplied to any existing machines. Further, the invention aims to providea construction f wherein the motor does not add materially to the bulkor size of the headof the machine. Still further the invention aims toprovide an attachment wherein the motor is mounted at the end'of thehead and pref-- erably is hung from the shaft of the head, theconstruction being such that high speed motor may be utilized withreduction gearing between the motor shaft and main shaft of the head.

The invention may be brieiiy summarized as consisting in certain noveldetails of construction, and combinations and arrangements of parts tobe described in the speciiication and set forth in the appended claims.

In the accompanying .sheet ofk drawings showing the preferred embodimentof the invention, Fig. 1 shows in side elevation a portion of the headof the sewing machine with part of the motor attachment in section; andFig. 2 is an end View looking towardthe left of Fig. 1, with parts brokeaway for the sake of clearness.

The head of the sewing machine includes a bed 10 and an arm 11 havingthe usual upright and horizontal portions, the arm being provided with amain operating shaft 12.

The motor for driving the machine is arranged at the end of the head,and in the present embodiment the shaft in the head is used as themotorl support. `lt is desirable, however, that a high speed motor beutilized, and that suitable speed reduction be provided betweentlie'niotor and shaft 12. For that reason the motor attachment includesa motor 13 which while supported from the shaft .12 is arranged belowthe latter, as clearly shown in Fig. 1. The frame or casing of the motor13 is extended upwardly whereit is provided. with a top portion v1&1

which is 'annular in form, and is concentric with respect tothe axis ofthe shaft 12.' 'At the center of the part 14.- there is an inwardlyextending hub 15 which' is'slipped onto sleeve 16 surrounding the shaft12 and reyed thereto, whichsleeve has an outward-` ly extending flange17. The Ahub 15 is held in place up against the flange 17 by ascrew 18at the outer end of shaft 12.

rlChe shaft 19 of motor 13 has a pinion 20 which drives an ,intermediategear 21 sup@ ported in this'instance on the casing of the motor, boththe pinion 2O and intermediate gear 21 being` on the inside of thelmotor cas- 'f ing, and the intermediate gear 21 drives a gear 22 whichis concentric with respect to the shaft 12 and has a .bearing on anannularshoulder 15a of the boss `15 of the upper Y y The upper`annals-ir part- 141 of the upper extensioncof rextension ofthe motorcasing.

the niotor casing has a flange which extends over the gear 2,2 so as tocompletely enclose it. @n the inner side hand wheel 23 which isI alsoconcentric with respect to the shaft 12. This hand? wheel has a portion23 which fits down onto and extends on the rear side of `flange 17which, as before stated, is a part of sleeve 16 keyedl to shaft 12,`Likewise the hand wheel has an axially extending hub-like portionl 23bto A which the gear22 is secured by screws 241 or other means. Thehub-like portion 23 `of the hand wheel carries a sliding locking pin 25by which` i the hand wheel may be locked to or released from shaft 12.shifted by an outside button 25a, and when moved to left hand position`when viewed as l2 in Fig. 1, it fits into la notch in the periphery offlange 17 onsleeve 16, so thatthe hand wheel and shaft 12 turn inunison, but when the pin 25 is slipped to its right hand lposition, themotor willturn'the hand wheel, but not turn the shaft 12, whereuponthedevice may be Y' used for bobbin winding purposes. 1

v To prevent the motor revolving about the axis ofshaft 12 when themotor is energized., any suitable stop means is provided between themotor `and lower partof arm 11, this stop means being here shown in thelformof a holding pin26, though othersuitable holding means may beutilized if desired.

einen .of the gear 22 there is a '80` This locking pin can be i Thus itwill be seen that the motor attachment is in the form ot' a unit hungfrom the operating shaft 12 of the motor head,

but still, unlike the motors which are concentric with respectto thedriving shaft, the present motor can be a high Speed motor With itsSpeed 1reduced by reducing gearing to the speed at Which the shaft ofthe head is to be rotated. This permits a much higher efliciency than ispossible with a motor Which is mounted dii-ect on the shaft of the head.

The attachment can be readily applied to or removed from tl e shaft 12,and the construction issuch Jthat an attachment ot vthis form can beapplied to practically all existin?,` machines, it being` necessary onlyto remove the ordinary hand Wheel and replace it with the motorattachment having` a special hand Wheel, such as that hereinilluetrated.

l do not desire to be coniined tothe exact details and arrangementsshown. ae changea may be made Without depar L1 from the spirit and Scopeof the invention; for eX- ample, it may be desirable to use al differentform oi? driving means betr-.een the motor and shaft ot' the head than.the gears here illustrated. Likewise, other Changes may be made in thedetails `of the construction.

Having described my invention, l claim:

l. ln combination With a sewing machine Y head having` an operatingShaft eff-tending; therethrough, a motor supported by the head andarranged at the end thereof, with its driving` shaft parallel totheshaft of the head but beloivvthe same 2. ln combination With asewingmachine head havingan operating shaft, a motor at the end 0i thehead, said motor beinghung from said Shaft but arranged below thesame.

The combination with. ya sewing machine head having anoperating shaft,of a motor attachment at the end of the head and supported by the shaft,said attachment comprieing a. motor With speed reducifig` drivingconnection with the shaft of the head.

e. The combination with a sewing A machinehead having an operatingshaft, of a motor attachmentk at the end of the head and supported by orhung from the shaft, said attachment ycomprising,` a relatively highspeed motor With a speed reducing" drivingconnection With the shaft ofthe head, and said attachmentlincluding also -a hand Wheel through Whichthe motor normally transmite power to the shaft.

5. The combination with asewing machine head having :an operating shaft,al motor attachment at the end of the headv and supported by orhung fromthe shaft, said attachment comorising a relatively high speed motor Witha'speed reducing driving' connection with the shaft of the head, andsaid attachment including also 'a-hand Wheel through Which the motor'normally transmits power to the Shaft, and means by which the handwheel may be connectedto and disconnected fromv the Sha-ft. y

ln testimony whereof, I hereunto affix my Signature,

roeren. F. HiLLrX.

